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Singh G, Panda S, Sapan S, Singh J, Chandewar PR, Biradar AV, Shee D, Bordoloi A. Polyoxometalate-HKUST-1 composite derived nanostructured Na-Cu-Mo 2C catalyst for efficient reverse water gas shift reaction. NANOSCALE 2024; 16:14066-14080. [PMID: 38995159 DOI: 10.1039/d4nr01185f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
Transforming CO2 to CO via reverse water-gas shift (RWGS) reaction is widely regarded as a promising technique for improving the efficiency and economics of CO2 utilization processes. Moreover, it is also considered as a pathway towards e-fuels. Cu-oxide catalysts are widely explored for low-temperature RWGS reactions; nevertheless, they tend to deactivate significantly under applied reaction conditions due to the agglomeration of copper particles at elevated temperatures. Herein, we have synthesized homogeneously distributed Cu metallic nanoparticles supported on Mo2C for the RWGS reaction by a unique approach of in situ carburization of metal-organic frameworks (MOFs) using a Cu-based MOF i.e. HKUST-1 encapsulating molybdenum-based polyoxometalates. The newly derived Na-Cu-Mo2C nanocomposite catalyst system exhibits excellent catalytic performance with a CO production rate of 3230.0 mmol gcat-1 h-1 with 100% CO selectivity. Even after 250 h of a stability test, the catalyst remained active with more than 80% of its initial activity.
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Affiliation(s)
- Gaje Singh
- Light and Stock Processing Division, CSIR-Indian Institute of Petroleum (IIP), Dehradun-248005, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Satyajit Panda
- Light and Stock Processing Division, CSIR-Indian Institute of Petroleum (IIP), Dehradun-248005, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Siddharth Sapan
- Light and Stock Processing Division, CSIR-Indian Institute of Petroleum (IIP), Dehradun-248005, India.
| | - Jogender Singh
- Light and Stock Processing Division, CSIR-Indian Institute of Petroleum (IIP), Dehradun-248005, India.
| | | | - Ankush V Biradar
- Inorganic Materials and Catalysis Division, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Debaprasad Shee
- Department of Chemical Engineering, Indian Institute of Technology, Hyderabad 502284, India
| | - Ankur Bordoloi
- Light and Stock Processing Division, CSIR-Indian Institute of Petroleum (IIP), Dehradun-248005, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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Liu X, Wang X, Sun H, Zhang Z, Song P, Liu Y. Highly Stable Bimetal Ni–Co on Alumina-Covered Spinel Oxide Derived from High Entropy Oxide for CO 2 Methanation. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Xuemei Liu
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin300350, China
| | - Xitao Wang
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin300350, China
| | - Huayu Sun
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin300350, China
| | - Ziyang Zhang
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin300350, China
| | - Pengfei Song
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin300350, China
| | - Yuan Liu
- Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin300350, China
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Enhanced CuAl2O4 Catalytic Activity via Alkalinization Treatment toward High CO2 Conversion during Reverse Water Gas Shift Reaction. Catalysts 2022. [DOI: 10.3390/catal12121511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
CO2 catalytic conversion to CO would likely be an important part of CO2 mitigation and utilization. In this work, CuAl2O4 was developed with a spinel structure that acts as an active and stable catalyst for this reaction. Here, the fundamental characteristics of CuAl2O4 catalyst were studied to understand the catalytic mechanism for the Reverse Water Gas Shift reaction. Based on the catalytic mechanism, the CuAl2O4 catalyst was found to have exceptional catalytic activity due to the high dispersion of copper on its surface, and it could have higher catalytic activity by increasing the oxygen vacancies on the surface of the catalyst via alkalinization treatment. By combining with XPS spectra, the relationship between the Raman mode and the oxygen vacancy structure on the CuAl2O4 surface was proved. Through these studies, it was proved that alkalinization treatment can regulate the oxygen vacancies on the surface of the catalyst and thus enhance the catalytic activity.
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Spindle-shaped nanoclusters self-assembled into bayberry-like hollow alumina microspheres for efficient catalytic hydrogenation of CS2 to CH3SH. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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